Zugzwang (German for “compulsion to move,” pronounced TSOOK-tsvang) is a position where every legal move makes your situation worse — but the rules force you to move anyway. If you could just “pass,” you’d be fine. You can’t, and that’s the whole problem.
It’s one of chess’s cruelest ideas. Normally having the move is an advantage — it’s your turn to do something useful. In zugzwang the move is a liability: you’re standing on a perfectly good position and you’re obligated to wreck it with your own hand.
How it works
Zugzwang shows up most often in the endgame, when few pieces are left and almost any move gives ground — the king has to step aside, a pawn has to advance into danger, or a defender has to abandon a key square.
In the diagram, Black would love to keep the king right where it is, holding the opposition. But it’s Black’s turn, so the king has to move — and the instant it steps aside (…Kd7 lets Kf6, …Kf7 lets Kd6), White’s king invades and the pawn queens. Flip the turn and White, forced to move first, can’t make progress — a draw. Same position, opposite results, decided purely by who has to move. That’s zugzwang.
Mutual zugzwang
When the position is losing for whoever is to move — both sides would happily pass — it’s called mutual zugzwang (or reciprocal zugzwang). The whole battle becomes about maneuvering so that it’s your opponent’s turn when the critical moment arrives. That’s what “playing for the opposition” in king-and-pawn endings is really about.
Related terms
- Stalemate — the extreme case: no legal move at all (but a draw, not a loss)
- En prise — another way a move can quietly cost you
- What is checkmate? — the goal zugzwang often helps deliver
- How games are drawn
- Back to the chess glossary
Frequently asked questions
How do you pronounce zugzwang? TSOOK-tsvang. It’s German — “Zug” (move) plus “Zwang” (compulsion).
Is zugzwang an official rule? No — it’s a concept, not a law. It’s simply a consequence of the rule that you must make a legal move on your turn.
Can you get out of zugzwang? Sometimes, if a “waiting move” exists that doesn’t damage your position. True zugzwang is precisely when no such move is available.
Written and fact-checked by the Chess Lab Academy Editorial Team (AI-assisted, human-edited) · Concept verified against Wikipedia and standard endgame theory; diagram checked with python-chess · Last verified 2026-07-13 · How we verify content.